The Ultimate Guide to QSK60-C Industrial Engine: Specs, Variants & Replacement

What is QSK60 engine?

The QSK60 engine is a high-performance, heavy-duty V16 diesel engine (V-configuration with 16 cylinders) developed by Cummins, with a displacement of 60.2 liters. Manufactured in part through Chongqing Cummins Engine Company (CCEC) for various industrial applications, the QSK60-C series stands out for its robust design and exceptional power output in demanding environments such as mining, oil & gas, and large-scale industrial equipment.

Physically, the engine measures approximately 3357 mm × 1730 mm × 2420 mm (length × width × height, though orientations may vary slightly by configuration), with a net dry weight of around 7990 kg.

It features the advanced CCEC HPI (High Pressure Injection) fuel system, paired with a turbocharger and low-temperature aftercooler (LTA) for optimized combustion efficiency, superior power delivery, and improved thermal management. Depending on the specific rating and market, it complies with emissions standards up to U.S. EPA Tier IV (or equivalent), balancing performance with environmental compliance.

Power output typically ranges from 1668 kW to 1864 kW (roughly 2237–2500 hp), with rated speeds between 1800 rpm and 1900 rpm, making it ideal for continuous heavy-load operations where reliability, durability, and high torque are critical.

This combination of massive displacement, sophisticated fuel delivery, and forced induction enables the QSK60 to deliver world-class performance in the most challenging industrial settings.

Advantages of CCEC QSK60 series industrial engine

• Built-in oil and coolant channels: No hoses = no leaks. Better cooling and oil flow. Engine parts last longer and need less repair.
• High-pressure common rail fuel system (HPCR or MCRS): Fuel is sprayed very accurately at any engine speed. You get instant power when you press the throttle, more strength, better fuel saving, quieter engine, less shaking, and cleaner air.
• Wastegate turbocharger: Gives strong pulling power (torque) even at low speeds, and keeps the power smooth and steady at high speeds no matter how heavy the load is.
• Rear Power Take-Off (REPTO): You can connect extra machines or tools directly to the back of the engine. This makes everything simpler to build, gives better control, and makes the whole system work more efficiently.

The QSK60 is currently one of the most popular high-horsepower engine models. It is actively produced at Cummins factories in the UK, India, and China.

For more details about the QSK60 engine, please check these related articles on our website:

• What Applications Does the CMI QSK60 Engine Have?
• Where Are QSK60 Engines Produced?

What is the Cummins QSK60-C industrial engine?

The CMI QSK60-C (Cummins QSK60 series, often built by CCEC in China) is a powerful, reliable V16 diesel engine that’s a classic choice for heavy-duty industrial work. With a massive 60.2-liter displacement, it delivers high horsepower (typically 2000–2700 hp or more) and is built tough for nonstop operation in the harshest conditions.

Main Application Fields

• Industrial & Construction Equipment 
  Powers large hydraulic excavators like the Komatsu PC4000, Hitachi EX3600, and XCMG XE4000.
• Mining Equipment 
  Widely used in huge mining dump trucks, including Belaz models (75305, 75306, 75307, 75310), Komatsu 830E-5, XCMG XDE240, and others from brands like Liebherr.
• Oil & Gas Industry
  A top favorite for fracturing trucks (frac trucks). Many Chinese manufacturers choose the QSK60-C as their go-to engine because of its strength, reliability, and performance in high-pressure pumping operations.

How many types of QSK60-C industrial engine?

There are two main types (or generations) of the QSK60-C industrial engine, based on the fuel system:

First Generation (Older Type)

HPI Fuel System This uses Cummins’ High-Pressure Injection (HPI) system with electronic control but mechanical injectors (not full common rail). It’s a semi-electronic setup that’s simpler and cheaper. Many older QSK60 engines in the field use this, like those in mining dump trucks (Belaz 75305/75306/75307/75310, Komatsu 830E-5) and hydraulic excavators (Komatsu PC4000, Hitachi EX3600, XCMG XE4000). Cummins has largely phased out new production of HPI industrial versions, though some factories (like in the UK and India) may still make them for certain markets or applications.

Second Generation (Newer Type)

MCRS Fuel System This features Cummins’ Modular Common Rail System (MCRS), a modern full electronic common rail setup with an advanced ECU. It gives better power, faster response, improved fuel economy, lower emissions, less noise/vibration, and longer life. All current new QSK60 industrial engines use MCRS. At CCEC (Chongqing Cummins in China), the main models are QSK60-G21, QSK60-G22, and QSK60-G23 (all MCRS-equipped).

Quick Note 

Cummins offers upgrade kits to convert old HPI engines to MCRS during rebuilds, which brings benefits like reduced fuel use, lower emissions, and longer engine life—especially popular in mining. This helps owners of older HPI models keep up without full replacement.

How to Buy a New Engine to Replace Your Old QSK60-C HPI Engine

Since Cummins (including CMI/CCEC) has discontinued new production of the QSK60-C industrial engines with the older HPI fuel system (High Pressure Injection), direct like-for-like replacements are no longer available from most factories. Here are the two main practical options:

Option 1: Buy a New QSK60 with MCRS Fuel System (Modern Replacement)

• This is the current standard for new QSK60 industrial engines (like the QSK60-G21, G22, or G23 models from CCEC in China).
• It uses Cummins’ advanced Modular Common Rail System (MCRS), which offers better power, fuel efficiency, lower emissions, reduced noise/vibration, and longer life.
• Downside: The fuel system and electronic controls are completely different from your old HPI engine. You’ll need to modify the machine’s driving control system (wiring, ECU integration, sensors, etc.) to make it work properly.
• Real-world example: Many customers have successfully installed new MCRS engines to replace old HPI ones in Komatsu PC4000 excavators and similar equipment.
• Where to buy: Contact Cummins dealers, authorized distributors, or CCEC directly for new stock. Some rebuilders or resellers may have low-hour or remanufactured units available.

Option 2: Convert a QSK60-G Generator Drive Engine to Industrial QSK60-C

• Cummins still produces QSK60-G series engines (generator drive) with the older HPI fuel system at some factories (e.g., in the UK or India).
• These G-drive models are very similar to the industrial QSK60-C in base design.
• By replacing specific components that differ (such as mounts, accessories, flywheel housing, or couplings), specialists can convert a QSK60-G into a full industrial QSK60-C equivalent.
• Big advantage: The converted engine keeps the HPI fuel system, so no changes are needed to your machine’s control or drive system—it’s a true “drop-in” replacement.
• This is a popular workaround for mining and heavy equipment owners who want to avoid control system mods.

Bonus Tip: Consider an HPI-to-MCRS Upgrade Instead of Full Replacement Cummins offers official fuel system upgrade kits for existing QSK60 HPI engines (especially in mining applications). During a rebuild or overhaul, you can convert your current engine to MCRS. Benefits include:

• 10%+ longer time between overhauls
• Fuel savings
• Reduced emissions and particulate matter
• Lower total cost of ownership

This is often cheaper and easier than buying a whole new engine, and it’s proven in real mining fleets (e.g., haul trucks and excavators).

For the best option, reach out to your local Cummins dealer, CCEC (for China-made units), or a certified Cummins service center—they can check availability, quote conversions/upgrades, and handle sourcing. This keeps downtime low and your equipment running reliably!

Engine Type	Key Features	Customer Acceptance	Applicable Models
QSK60-C MCRS system	Common rail fuel system; requires modification of the cab control system	Low (customers prefer no modifications)	Belaz 75306, Belaz 75313, Komatsu PC4000
QSK60-G Generator Drive Engine (HPI Fuel System)	Generator drive engine; most components are the same as the industrial-type QSK60 engine	High (no need to modify the machine’s control/drive system)	QSK60-G7, QSK60-G3, QSK60-C3/C4

How to replace QSK60-C HPI fuel system engine with QSK60-C MCRS fuel system engine?

Basic Information of Both Models

Model 1 (HPI Fuel System)

• Industrial QSK60
• FR60045
• Advertised power: 2,237 BHP (1,668 kW) @ 1800 RPM
• Peak torque: 6,677 Ib-ft (9,053 N-m) @ 1500 RPM
• Configuration: D593001CX03
• CPL Code: 2821
• Revision: 15-Jan-2015
• Compression Ratio: 14.5:1
• Fuel System: Celect Electronic
• Emission Certification: Non-certified
• Displacement: 3,674 in³ (60.2 L)
• Aspiration: Turbocharged and Aftercooled

Model 2 (MCRS Fuel System)

• Industrial QSK60
• FR6746
• Advertised power: 2,500 BHP (1,864 kW) @ 1900 RPM
• Governed power: 2,500 BHP (1,864 kW) @ 1900 RPM
• Peak torque: 7,257 Ib-ft (9,839 N-m) @ 1,500 RPM
• Configuration: D593007CX03
• CPL Code: 3451
• Revision: 19-May-2016
• Compression Ratio: 14.5:1
• Fuel System: CMS MCRS
• Emission Certification: U.S. EPA Tier 2
• Bore: 6.26 in (159 mm)
• Stroke: 7.48 in (190 mm)
• Displacement: 3,661 in³ (60 L)
• Aspiration: Turbocharged and Aftercooled
• Number of cylinders: 16

Installation Diagram Comparison

Both QSK60-G (generator drive) and QSK60-C (industrial) engines share the same basic platform, similar width, and overall structure. Major component layouts are nearly identical.

Minor adjustments may be needed for:

• Air intake and exhaust outlets (depending on machine setup)
• Flywheel end: Install a flexplate for coupling to electric drive systems

This makes conversion from QSK60-G to QSK60-C straightforward with only targeted changes—no major redesign required.

No.	Item to Compare	HPI	MCRS
1	Length	2897 mm	2897 mm
2	Width	1627 mm	1589 mm
3	Height	2013 mm	2011 mm
4	Front Support	EM6085	EM6085

Performance Data Comparison

HPI Fuel System

• Rated Power: 1668 kW @ 1800 RPM
• Peak Torque: 9053 N.m @ 1500 RPM
• Rating Type: Intermittent

MCRS Fuel System

• Rated Power: 1864 kW @ 1900 RPM
• Peak Torque: 9839 N.m @ 1500 RPM
• Note: Output at 1200 RPM is weaker

Torque and Power Output Data (HPI)

RPM	Torque (N-m)	Power (hp)	Power (kW)
800	5113	574	420
1000	5614	788	587 (Note: Original data shows “5”, corrected based on context)
1200	7214	1216	907
1300	5246	1505	1122
1425	8948	1791	1338
1500	9053	1907	1422
1600	9045	2032	1515
1700	8987	2141	1597
1800	8849	2237	1668

Torque and Power Output Data (MCRS)

RPM	Torque (N-m)	Power (hp)	Power (kW)
600	4078	549	409 (Note: Original data shows “256”, corrected based on context)
800	5113	574	420
1000	5614	788	587
1200	7125	1170	872
1400	9796	1427	1064
1500	9839	2072	1548
1600	9720	2201	1641
1700	9660	2306	1720
1800	9509	2416	1801 (Note: Original data shows “1.002” and “1,064”, corrected based on context)
1900	9370	2500	1864

Control System Modification Scenarios

MCRS engines have higher inlet air flow, exhaust gas flow, and heat rejection to coolant compared to HPI engines.

Therefore, reassess (and possibly upgrade) the capacity of:

• Air filter
• Exhaust pipe
• Aftercooler

to handle the increased demands and prevent restriction or overheating.

Performance Parameters Comparison (HPI vs MCRS)

Parameter		HPI (Advertised Power @ 1800 RPM)	HPI (Peak Torque @ 1500 RPM)	MCRS (Advertised Power @ 1900 RPM)	MCRS (Peak Torque @ 1500 RPM)
Output Power (HP/kW)		2237 / 1668	1807 / 1422	2500 / 1864	2073 / 1546
Torque (lb-ft / N.m)		8827 / 8849	8677 / 8053	8827 / 8849	8677 / 8053
Friction Horsepower (HP/kW)		309 / 230	196 / 146	309 / 230	–
Intake Manifold Pressure (in-Hg / kPa)		83 / 211	46 / 154	80 / 272	66 / 224
Turbo Comp. Outlet Pressure (in-Hg / kPa)		84 / 215	47 / 159	81 / 274	66 / 224
Turbo Comp. Outlet Temperature (°F / °C)		256 / 180	288 / 149	421 / 216	385 / 196
Inlet Air Flow (ft³/min / L/s)		4774 / 2263	3249 / 1679	6076 / 2868	4371 / 2063
Charge Air Flow (kg/min)		348	157.9	–	–
Exhaust Gas Flow (kg/min / L/s)		11258 / 5318	9106 / 4298	14240 / 6721	11802 / 5570
Exhaust Gas Temperature (°F / °C)		850 / 454	580 / 527 (Note: Original data may have a typo, 580°F is 304°C, corrected to 527°C as per original)	820 / 438	949 / 509
Heat Rejection To Ambient Air (BTU/min / kW)		7828 / 139	8645 / 117	9421 / 166	7730 / 136
Heat Rejection To Exhaust Gas (BTU/min / kW)		70510 / 1240	58629 / 1049	89044 / 1566	72196 / 1269
Heat Rejection To LTC Coolant (BTU/min / kW)		–	–	31655 / 557	31012 / 545
Heat Rejection To HTC Coolant (BTU/min / kW)		–	–	32944 / 579	21997 / 387

Tips for Modifying a QSK60-G Engine into a QSK60-C Engine While Keeping the HPI Fuel System

Converting a QSK60-G (generator drive) engine to a QSK60-C (industrial) equivalent with the original HPI fuel system intact is a smart, popular solution. Since the HPI system matches the older QSK60-C industrial engines, no changes are needed to your machine’s fuel controls, ECU, or drive system—making it a near drop-in replacement for many applications.

Key Steps and Tips

1. Confirm the Original Engine Specs Provide the original QSK60-C’s nameplate data or ESN (Engine Serial Number). This is essential to match power rating and performance exactly. The QSK60-C HPI comes in four common ratings:
   • l2237 HP
   • l2300 HP
   • l2500 HP
   • l2700 HP
2. Select the Right QSK60-G Model Cummins still produces QSK60-G generator drive engines with HPI in certain factories (e.g., UK or India). Available models include:
   • QSK60-G3
   • QSK60-G4
   • QSK60-G7
   • QSK60-G8 (Noted: These vary in rated power—choose one closest to your original rating for best match. A professional team reviews options based on your ESN to ensure identical performance parts (no changes to critical internals like pistons, cams, or turbos to maintain quality and reliability).)
3. Compare and Modify External/Outer Parts Once performance parts match (usually 2–3 close options), evaluate differences in:
   • Flywheel/flywheel housing → Install or adapt a flexplate for coupling to electric drive/transmission (common in mining trucks/excavators).
   • Air intake and exhaust outlets → May need rerouting or adapters for machine clearance/piping.
   • Other accessories (mounts, couplings, fan clutch, etc.) → Swap or add as needed. Compare modification costs across models and pick the most economical one.
4. Create a Detailed Replacement Plan Get a document listing every difference:
   • Same as original (no work)
   • Different but compatible (no impact)
   • Different and requires modification This ensures clear scope of work for seamless installation.
5. Final Testing After modifications, run full performance tests to verify output, torque, fuel delivery, and all parameters match the original. The result is a plug-and-play engine—no extra machine tweaks required.

Common Applications Where This Works Well This conversion is especially useful for repowering:

• Mining dump trucks: Belaz 75305, 75306, 75307, 75310; Komatsu 830E-5
• Hydraulic excavators: Komatsu PC4000; Hitachi EX3600

Work with a trusted Cummins-authorized specialist or dealer for accurate matching, genuine parts, and to avoid risks from unofficial mods. This approach keeps reliability high while avoiding control system headaches from switching to newer MCRS engines.

Process of Converting a QSK60-G Engine to a QSK60-C Engine with HPI Fuel System

Performance Parts Matching Using the original engine’s serial number provided by the customer, our skilled engineering team reviews available QSK60-G models (QSK60-G3, QSK60-G4, QSK60-G7, QSK60-G8) and identifies the best match. The main focus is on performance parts. To maintain original quality and reliability, we never change any performance-related components. The goal is to select a generator-drive engine that has identical performance parts to the customer’s existing QSK60-C (per serial number data).

Outer Parts Evaluation From the shortlist of models with matching performance parts (typically 2–3 choices), we compare the differences in external components and estimate the extra costs needed for each one.

Final Model Selection We weigh the modification costs against the base price of each standard QSK60-G model (QSK60-G3, QSK60-G4, QSK60-G7, QSK60-G8) and choose the most cost-effective and practical option for the replacement.

Replacement Plan Document Once the specific model is confirmed, we prepare a detailed engine replacement plan. This document lists every difference item by item, clearly marking whether each part is identical to the original, different but compatible (no impact on operation), or different and requires modification. It spells out exactly what work is needed so the converted QSK60-G can be installed as a seamless replacement for the original QSK60-C industrial engine.

Final Testing Every modified engine goes through thorough testing to verify that its performance, output, and all key parameters match the original specifications. Once approved, customers receive a true plug-and-play engine ready for direct installation with no further adjustments required.

Example: QSK60-C CPL2699 vs QSK60-G7 CPL4557 Modification Solution

QSK60-C CPL2699		QSK60-G7 CPL4557		Solution
Option No.	Option Name	Option No.	Option Name
NA	NA	AC6076-07	Air Cleaner	Remove
NA	NA	AC6702-03	Air Cleaner Plumbing	Remove
NA	NA	AC6720-03	Air Cleaner Mounting	Remove
AD6021-03	Accessory Drive Pulley	AD6016-02	Accessory Drive Pulley	Add AD6021
NA	NA	AG6004-02	Restriction Indicator	Remove
AP6118-02	Agency Approval	AP6330-01	Agency Approval	Remove
AP6704-03	Declaration Incorporation	AP6704-03	Declaration Incorporation	Keep Original
BB67044-00	Cylinder Block Lubrication Plumbing	BB67044-00	Cylinder Block Lubrication Plumbing	Same
BB6714-28	Cylinder Block	BB6716-30	Cylinder Block	Slightly different without significant impact on function and performance; keep original
BB6795-00	Cylinder Block Coolant Plumbing	BB6797-00	Cylinder Block Coolant Plumbing	Same
BC6021-00	Base Components	BC6024-00	Base Components	No information available
BR6791-04	Crankcase Breather	BR6875-00	Crankcase Breather	Different without significant impact on function and performance; keep original
CA6036-01	Air Cleaner Plumbing Arrangement	NA	NA	Add CA6036
CB6701-04	Barring Drive	CB6701-04	Barring Drive	Same
CC6708-02	Compressor Coolant Plumbing	NA	NA	Add CC6708
CM6707-12	Cam Follower Cover	CM6719-10	Cam Follower Cover	Different without significant impact on function and performance; keep original
CO6702-01	Oil Replenishing System Plumbing	CO6704-02	Oil Replenishing System Plumbing	Different without significant impact on function and performance; keep original
CP6030-07	Air Compressor	NA	NA	Add CP6030
DA6147-06	Vibration Damper Arrangement	DA6149-05	Vibration Damper Arrangement	Crankshaft pulley is different; change to DA6147
DF6003-09	Accessory Drive	DF6003-09	Accessory Drive	Same
DF6701-03	Front Gear Train Accessory Mounting	DF6701-03	Front Gear Train Accessory Mounting	Same
DL6023-00	Drain Location	DL6010-00	Drain Location	Different without significant impact on function and performance; keep original
DO60386-00	Customer Interface Software	DO60721-00	Customer Interface Software	Different; recalibrate ECM to DO60386
DP6703-08	Fuel Pump Drive	DP6702-10	Fuel Pump Drive	Different; change to DP6703 (Note: Original data shows “DF6703”, corrected to “DP6703” for consistency)
NA	NA	EA6046-01	Electrical Accessories	Remove
NA	NA	EA6759-00	Electric Starting Accessories	Remove
EE6105-02	Alternator	EE6066-05	Alternator	250A vs 75A; change to EE6105
EH6047-04	Alternator Mounting	EH6005-01	Alternator Mounting	Change to EH6047
EH6707-10	Alternator Drive	EH6702-06	Alternator Drive	Change to EH6707
EI6804-01	Engine Monitor Mounting	NA	NA	Add EI6804
EM6085-04	Front Engine Support	EM6078-03	Front Engine Support	Different without significant impact on function and performance; keep original
FA6201-09	Fan Drive	FA6174-06	Fan Drive	Different; change to FA6201
FA6730-01	Fan Drive Mounting	NA	NA	Add FA6730

Why Are There So Many Different Prices for QSK60 Engines?

Prices for QSK60 engines (especially from Chinese suppliers) vary wildly—ranging from suspiciously low offers on platforms like Alibaba (e.g., $4,000–$20,000 for “new” units) to much higher official or genuine prices (often $150,000–$475,000+ for authentic high-horsepower models). The reason isn’t just market competition; it’s often due to big differences in what you’re actually getting.

Engine Types and Quality Levels

Engine Type	Quality & Reliability	Notes
Oil & Gas Engine	High	Genuine, reliable
Industrial Engine	High	Genuine, reliable
Generator Engine	Medium	Designed for fixed-speed operation; cheaper than industrial engines
Marine Engine	High	Genuine, reliable
Rebuild / Recondition / 2nd hand Engine	Low	Not reliable; EMAC does not handle these

Common Cost-Cutting Tricks in the Market (Especially from Some Chinese Suppliers)

1. Modified G-drive engines → Cheaper base price, then “converted” to look like industrial models—but they may lack durability for variable loads.
2. Assembled engines → Built outside official factories using lots of used or fake parts.
3. Counterfeit engines → Fake Cummins-branded units (often with copied labels, QR codes, etc.). Cummins and authorities in China have cracked down on these, with seizures and arrests reported for bogus parts and engines.
4. Low-standard rebuilds → Local shops repair engines poorly, sometimes even welding broken major components.

When sourcing QSK60 engines from Chinese suppliers, choosing a trustworthy and reliable partner is the single most important factor for long-term success.

Chasing the lowest price almost always leads to serious problems down the road—poor performance, unexpected breakdowns, safety risks, wasted downtime, expensive repairs, or even legal issues from counterfeit parts. In the worst cases, the hidden costs can be catastrophic, potentially threatening your entire operation or company.